Development of Earth's early oceans was likely due to
A) water-rich meteors bombarding Earth's surface.
B) volcanic outgassing in Precambrian time.
C) intense convection in the mantle,and severe heat dissipation from Earth's interior.
D) cooler temperatures that promoted the condensation of water vapor in the atmosphere.
Correct Answer:
Verified
Q73: Life forms in the Precambrian included
A)trilobites.
B)brachiopods.
C)coelacanths.
D)cyanobacteria.
Q74: Life forms in the Precambrian include
A)trilobites,brachiopods and
Q75: The oldest known fossils of single-celled organisms
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Q77: The banded iron formations began to form
Q79: The fundamental time unit representing a major
Q80: On the Geologic Time Scale,the time unit
Q81: The beginning of the Paleozoic is marked
Q82: The Devonian period is most noted for
Q83: The formation of the supercontinent of Pangaea
A)resulted
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